Abstract
Main regularities of heat gravitational convection are considered near the thermodynamic critical point. Special physical properties of supercritical fluids (strong increase of heat capacity at constant pressure and coefficients of heat extension and isothermal compressibility, convergence to zero of the coefficient of thermal diffusivity upon approximation to a critical point) lead to the features of convective flow and heat transfer. Hydrodynamic behavior of supercritical fluids is characterized by intensification of internal movement, decrease in the spatial scale of convection, formation of a piston effect, temporal multiresolution of dynamic and heat processes, and the effect of stratification.
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References
D. Yu. Zalepugin, N. A. Til’kunova, I. V. Chernyshova, and V. S. Polyakov, Sverkhkrit. Fluidy: Teor. Prakt. 1(1), 27 (2006).
A. Z. Patashinskii and V. L. Pokrovskii, Fluctuation Theory of Phase Transitions (Nauka, Moscow, 1975) [in Russian].
M. A. Anisimov, The Critical Phenomena in Liquids and Liquid Crystals (Nauka, Moscow, 1987) [in Russian].
V. I. Polezhaev and E. B. Soboleva, Priroda (Moscow, Russ. Fed.), No. 10, 17 (2003).
V. M. Emel’yanov, A. A. Gorbunov, A. K. Lednev, and S. A. Nikitin, Sverkhkrit. Fluidy: Teor. Prakt. 4(2), 71 (2009).
A. V. Zyuzgin, A. I. Ivanov, V. I. Polezhaev, G. F. Putin, and E. B. Soboleva, Kosm. Issled. 39(2), 188 (2001).
V. I. Polezhaev and E. B. Soboleva, Izv. Akad. Nauk, Mekh. Zhidk. Gasa, No. 3, 70 (2000).
J. C. Dunn and H. C. Hardee, J. Volcanol. Geotherm. Res. 11, 189 (1981).
N. V. Koronovskii, Soros. Obrazov. Zh., No. 10, 55 (1999).
E. B. Soboleva, Ann. N.Y. Acad. Sci. 1161, 117 (2009).
V. I. Polezhaev and E. B. Soboleva, Izv. Akad. Nauk, Mekh. Zhidk. Gasa, No. 2, 48 (2005).
E. B. Soboleva, Eprint. Fluid Dynamics (2010). arXiv: 1001.4139v1 [physics.flu-dyn]
A. B. Kogan and H. Meyer, Phys. Rev. E 63, 056310 (2001).
D. A. Nield and A. Beian, Convection in Porous Media (Springer, New York, 1992).
E. B. Soboleva, Izv. Akad. Nauk, Mekh. Zhidk. Gasa, No. 2, 57 (2008).
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Original Russian Text © E.B. Soboleva, 2013, published in Sverkhkriticheskie Flyuidy: Teoriya i Praktika, 2013, Vol. 8, No. 4, pp. 62–77.
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Soboleva, E.B. Thermohydrodynamics of supercritical fluids in the presence of temperature heterogeneities. Russ. J. Phys. Chem. B 8, 1009–1018 (2014). https://doi.org/10.1134/S1990793114080132
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DOI: https://doi.org/10.1134/S1990793114080132